86339776 divided by 561 
The aim is to understand the frequency of 561 in 86339776.

On to step 1:
561 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 561

On to step 2:
When dividing 86 by 561, we get 0 with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Bring next digit (3) of the dividend behind the 86 and repeat the process: 863 / 561

Moving on to step 3:
The number 561 fits into 863 1 times, leaving a remainder of 302.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 302 after subtracting 561 from 863.
Grab the next digit (3) from the dividend, add it to 302, then carry on: 3023 / 561

Going ahead to step 4:
3023 divided by 561 is 5 with a remainder of 218.
The next digit of our result is 5. 
Result so far: 15.0
If we take 2805 away from 3023, we end up with 218.
Grab the next digit (9) from the dividend, add it to 218, then carry on: 2189 / 561

On to step 5:
The number 561 fits into 2189 3 times, leaving a remainder of 506.
Record the quotient 3 as the next digit in the result. 
Result so far: 153.0
Deduct 1683 from 2189 and we're left with 506.
Take the next digit (7) from the dividend and append it to 506, then repeat: 5067 / 561

Step 6:
If we divide 5067 by 561, we get 9 and a remainder of 18.
The next digit of our result is 9. 
Result so far: 1539.0
If we subtract 5049 from 5067, we get 18.
Take the next digit (7) from the dividend and append it to 18, then repeat: 187 / 561

Advancing to step 7:
If we divide 187 by 561, we get 0 and a remainder of 187.
Use 0 as the next digit of our solution. 
Result so far: 15390.0
The remainder is 187 after subtracting 0 from 187.
Bring next digit (6) of the dividend behind the 187 and repeat the process: 1876 / 561

Going ahead to step 8:
1876 divided by 561 is 3 with a remainder of 193.
Use 3 as the next digit of our solution. 
Result so far: 153903.0
The remainder is 193 after subtracting 1683 from 1876.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Going ahead to step 9:
The number 561 fits into 1930 3 times, leaving a remainder of 247.
Record the quotient 3 as the next digit in the result. 
Result so far: 153903.3
If we take 1683 away from 1930, we end up with 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Let's proceed to step 10:
The number 561 fits into 2470 4 times, leaving a remainder of 226.
Write down 4 as next digit of the result. 
Result so far: 153903.34
Deduct 2244 from 2470 and we're left with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

On to step 11:
When dividing 2260 by 561, we get 4 with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 153903.344
Deduct 2244 from 2260 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

In conclusion, the division gives 153903.344 with a balance of 0.0016.